Moving-picture-film reel.



UNITED sTATEs PATENT orrrca.

CHARLES T. DUF FEY, OF CAMBRIDGE, OHIO.

MOVING-PICTURE-FILM REEL.

Specification of Letters Patent.

Patented Dec. 21, 1915.

Application filed February 12, 1914.- Serial No. 818,369.

particularly to the combination with a spoolof such a reel of a film grip, in the use of which the film may be readily applied to or -removed from the spool with the grip operative from the side plates of the reel.

2 under practically any invention the use of of oper- The main object of the present is the provision of a film grip in which by reason of its simplicity ation and function,

, and all conditions, while the spec'fic structure of the grip insures its perfect action and effectiveness as long as the reel-remains in use.

The invention in the preferred form of details will bedescribed in the following cured upon 30 plates being omitted. Fig. 2 is a the ends of the strip, so as specification, reference being had particularly to the accompanying drawings, in

which Figure 1 is a plan view of the spool, side vertical central section on line 2--2 of Fig. 1. Fig. 3 is a transverse section taken through the push rod.

In carrying out the improvement, I sethe surface of the spool 1 a 2, said spring being secured in the medium of the screw 3 the strip and taking into being intermediate to provide free gripping ends 4. The spring strip conforms to the shape of the spool and snugly fits the same, being approximately equal in length to one-third the circumferential length of spring strip place through passing through the spool, the connection the spool, though these proportions are the spring merely illustrative of a desirable arrangement.

The spool proper at a point intermediate the gripping end and screw connection of strip is bored for a portion of its length and from opposite sides to provide a cylindrical recess 5, opening throughthe end of the spool and terminating short of its median diameter line. The recesses 5 are arranged on opposite sides of the screw 3,

that is each recess is between the screw and following is a specifithe film may be threaded.

one gripping end of the spring strip being located more particularly so that a recess for operating the gripping end of the spool is with respect to the screw connection locatedreverse to the direction of rotation of the reel. The spool is further formed with an auxillary recess 6 forming a continuation of each recess 5 and extending axially of the spool to a point beyond the medium line thereof, the recess 5 communicating with the recess 6 with the latter concentric with the former. In the recess 5 is secured a sleeve 7 having an initially extending annular flange 8 at its inner end the sleeve corresponding in length to the length of the recess 5 and the opening of the flange 8-formmg a gu de for the reception of the push rod 9, terminating in a button 10 at the outer end, the spring 11 encircling the push rod and bearing between the button and flange 8, the spring serving to normally maintain the push rod at the limit of outer movement.- The push rod more or .less accurately fits for sliding movement the recess 6, and at its innerend is formed to present a beveled surface 12. Beneath each section of the spring strip intermediate the screw 3 and gripping end 4 is arranged a bore 13 communicating at its lower end with the recess 6. A sleeve" 14 is snugly fitted in th'e'bore 13 and the/pin 15 slidably fitted in the sleeve, the lower end of the pin normally resting upon the push rod 9 and on the inclined surface thereof, the spring 11 so positioning the push rod as to maintain the latter in such relation to the pin as to cause the latter, to rest upon the inclined surface adjacent the relatively. inner or lower end thereof.

The side plates 17 which together with the spool completes the reel, aresecured in place through the" medium of screws 18 said side plate being formed with openings 19 to regls The with the respective buttons 10.

19 .are slightly smaller than the ter openings buttons to prevent complete projection of the latter therethrough, the convex surface of the buttons projecting sufficiently through will be obthe openings for operation.

The use of the improvement vious from the above description, taken in connection with the drawings, it being obvious that upon pressure upon either push rod the pin cooperating therewith will be elevated to force the gripping end of the spring from contact with the spool surface thereby permitting ready insertion or withdrawal of the film end. The improvement is Lgripping cooperation with the spool surface.

2. The combination with a reel spool, of a --g'ripping spring secured thereon, a lifting element movable at right angles to theaxis 1, of the spool and cooperating with the spring, and an operating element movable axially "of the spool and cooperating with the'lifting element in movement of said operating element in one direction.

3%. The combination with the reel spool andlside plates removably secured thereto,

of a spring arranged on and conforming to the surface of the spool, said spring being securedintermediate its ends and the spool to provide gripping ends of the spring termmals, niean's operative in the spool and underlyingthe gripping ends of the sprlng, and'operating elements for said means, said elements being movable axially of the spool and limited iIixtheir inoperative movement by the said plates.

4. The combination with the reel spool and side plates removably secured thereto, of a spring arranged-on and conformmgto the surface of the spool, said spring being secured intermediate ends and the spool provide gripping ends of the spring termlnals, means operative in the spool and underlying the gripping ends of the spring, and

operating elements for said means, said elements moving axially ofthe spool and being operative through the side plates, sa1d side said elements.

.plates limiting the inoperative movement of 5. The combination with a reel spool and side plates therefor, of a gripping spring secured to the spool, and a push rod operative in the spool and adapted in movement In one direction to elevate the spring, said push rod having a head end accessible through an opening formed in one of the side plates and cooperating with the edges -of said opening to limit the inoperative movement of the push rod.

e. The comtifiatmmwah a reel spool andfj side plates therefor, of a gripping spring se/ cured to the spool, and a push rod operative in the spool and adapted in moveme t in one direction to elevate the spring, sai push rod having a .head end accessible through an opening formed in'one ofthe side plates and ycooperating with the edges of said opening to limit the inoperative movement of the push rod, said head end being rounded to normally project in part through the open ing in the side said ush rod.

7. reel for films and the like comprising a hub having a. recess parallel with its axis plate to permit operation of and a bore at-right angles thereto, and terminating in said recess, amember movable in said recess and ha ing an inclined surface, a film. grippin spring on the hub, and a memberfmovabe in the-\said bore for cooperation withg said inclined surface and engageable with'saidaspringm raise the same.

8. The combination with a reel spool, of a film gripping spring, and means involving distinct elements and movable axially of and at. right angles to the axis of the spool and i accessible from the outside of the spool for.

gripping cooperamoving said spring from tion with the spool surface. I

In testimony whereof I aflix my'signature in presence of two witnesses.

CHARLES T.DUFFEY. I

Witnessest D. O. Cannes, JOHN SHERMAN TAYLOR. 

